 /*******************************************************************************
  * Copyright (c) 2000, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/

 package org.eclipse.ui.internal.editors.text;

 import java.lang.reflect.InvocationTargetException ;

 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.core.runtime.NullProgressMonitor;
 import org.eclipse.core.runtime.jobs.ISchedulingRule;

 import org.eclipse.jface.operation.IRunnableContext;
 import org.eclipse.jface.operation.IRunnableWithProgress;

 import org.eclipse.ui.actions.WorkspaceModifyDelegatingOperation;
 import org.eclipse.ui.texteditor.ISchedulingRuleProvider;

 /**
  * @since 3.0
  */
 public class WorkspaceOperationRunner implements IRunnableContext {

     private IProgressMonitor fProgressMonitor;

     public WorkspaceOperationRunner() {
     }

     /**
      * Sets the progress monitor.
      *
      * @param progressMonitor the progress monitor to set
      */
     public void setProgressMonitor(IProgressMonitor progressMonitor) {
         fProgressMonitor= progressMonitor;
     }

     /**
      * Returns the progress monitor. It there is no progress monitor the monitor\
      * is set to the <code>NullProgressMonitor</code>.
      *
      * @return the progress monitor
      */
     public IProgressMonitor getProgressMonitor() {
         if (fProgressMonitor == null)
             fProgressMonitor= new NullProgressMonitor();
         return fProgressMonitor;
     }

     /*
      * @see org.eclipse.jface.operation.IRunnableContext#run(boolean, boolean, org.eclipse.jface.operation.IRunnableWithProgress)
      */
     public void run(boolean fork, boolean cancelable, IRunnableWithProgress runnable) throws InvocationTargetException , InterruptedException {
         if (runnable instanceof ISchedulingRuleProvider)
             run(fork, cancelable, runnable, ((ISchedulingRuleProvider)runnable).getSchedulingRule());
         else
             run(fork, cancelable, runnable, ResourcesPlugin.getWorkspace().getRoot());
     }

     /*
      * @see org.eclipse.jface.operation.IRunnableContext#run(boolean, boolean, org.eclipse.jface.operation.IRunnableWithProgress)
      */
     public void run(boolean fork, boolean cancelable, IRunnableWithProgress runnable, ISchedulingRule schedulingRule) throws InvocationTargetException , InterruptedException {
         WorkspaceModifyDelegatingOperation operation= new WorkspaceModifyDelegatingOperation(runnable, schedulingRule);
         operation.run(getProgressMonitor());
     }
 }

